Dust indicator for air-method cleaning systems



D. B. REPLOGLE DUST INDICATOR FOR AIR-METHOD CLEANING SYSTEM June 13, 1944.

Filed 001;. 8, 1941 2 Sheets-Sheet 1 A m F Jpn/um D. B. REPLOGLE June 1944- 0. B. RE PLOGLE 2,351,068

DUST INDICATOR FOR AIR-METHOD CLEAflING SYSTEM Filed Oct. 8, 1941 2 Shasta-Sheet 2 FIG.9.

D. B. EEPLoaLa Patented June 13, 1944 UNITED STATES PATENT OFFICE DUST INDICATOR FOR AIR-METHOD CLEANING SYSTEMS Daniel Benson Replogle, Berkeley, Calif.; Bank of America National Trust and Savings Association, Carl S. Replogle, Harold E. Queen, and Laurie H. Bullock, executors of said Daniel Benson Rcplogle, deceased, assignors to The Ohio Citizens Trust Company, Toledo, Ohio, a corporation of Ohio, as trustee Application October 8, 1941, Serial No. 414,212 8 Claims. ('01. 30265) The invention relates to dust indicator for air Fig. '7 is an exploded view taken cdgewise of method cleaning systems and the subject matter the article in Fig. 6. of the present application is related to that of Fig. 8 is a side view of the coupling element. my prior applications Ser. No. 381,200 filed Feb. Fig. 9 is a View taken at right angles of Fig. 8 28, 1941, now Patent No. 2,269,483, dated Januin exploded form. ary 13, 1942; Ser. No. 387,717, filed Apr. 9, 1941; Figs. 10 and 11 are designed to show the device Ser. No. 395,320 filed May 26, 1941; Ser. No. 411,- when viewed at right angles to the plane of 931 filed Sept. 22, 1941, now Patent No. 2,293,920. the pipe line instead of at right angles to the dated August 25, 1942, and of my application Ser. plane of the oblate spheroid or globular part, Fig. No. 412,861, filed Sept. 29, 1941, entitled Dust ar- 10 11 being of the coupling element only with the resting indicator for suction cleaners. globular part removed.

The present device is adapted to connect with Referring to the drawings and with particular the suction pipe of a suction cleaning system and reference to Fig. 4, A denotes a hollow wand or consists of two principal elements: (1) a pipesuction pipe of an air-method cleaning system coupling element hawng a trough-shaped socket 5 having a suitable floor tool or nozzle B at one adapted to receive a transparent globular eleend thereof. C denotesacoupling element having ment, and (2) the transparent globular element means for yleldingly and releasably supporting a adapted to be placed into the coupling element transparent globular elementDtherein. The couand readily removable therefrom, and in a posipl ng ele 1' fitting C communicates at its tion providing communication through the pipes entrance end with the suction pipe A and at, its coupled. exit end with an outlet pipe E, preferably a, flex- In accordance with the herein disclosed emible tube, which communicates with a suitable bodiment of the invention the transparency i source of suction not shown. The globular elecomposed of two like saucer-shaped discs and a ment D is provided with apertures which are fiat perforated disc interposed between the two aligned with the inlet d Outlet p pes o t so as to form an oblate spheroid. Coincident coupling Element sp e yedges may be fused together if made of glass or in The coupling element 0 may be constructed of any suitable way secured around the periphery if two l r halves I and I the part designated made of other material, as Celluloid or methyl" the entrance m a and the part m tha crylate vinyl esters and the 1mm designated l carrying the ex1t pipe 3. Theparts The invention will be more readily understood are secured together by rivets or otherwise as by reference to the accompanying drawings in at 5 0r 3, d mend ng heads of thei rivgts which is set forth an illustrative embodiment of may have helmny abmt them W re tents l and 8 which are designed to hold the the inventive thought it being understood that 3.3 globular part D in position by tension against its the invention in its broadest aspects is not limited edges and engagement in notches at opposite to the detalls of construction edges of the globular element D, said notches A form of the full sized article is illustrated. being designated and respectively the l f The transparent globular element D is prefer- 1 1S slde taken at fight R to 40 ably formed of two halves 20, 21, of any suitthe oblate spheroid when placed in position for able transparent material such as glass, Celluloid service and showing the coupling el t in an or one of the newer transparent synthetic resins. angular position with the emjmnce and exit The halves may be fused together at their meetnipples shown in partial perspective. ing edges as indicated at 22 or may be secured Fig. 2 is a view of the assembled article taken 5 together in any Suitable manner, These ha1ves at right angles to that of include between them a suitable fiat disc or diae 3 S a p View Of the device with parts phragm 9 which maybe formed of the same transbroken yparent material as the halves 20 and M of the Fig. 4 is a diagrammatic view suggestive of the globular m b 13, The disc 9 may be of one po n of e device in e P p line a cleanpiece or may be formed of a plurality of laminaing system. tions as set forth in my prior applications.

Fig. 5 is a diagrammatic view suggestive of the The diaphragm or disc 9 may be provided at removal by hand of the globular element. its middle with a screen area In which may be Figure 6 is a diagrammatic side view of the perforated through the transparent material of globular element. the disc 9 or a wire screen mat be inserted and secured between two laminations of the diaphragm transparent material 9.

A designating arrow 23 is shown to indicate the part of the diaphragm or assembled globular part D which should be uppermost when in use so that apertures II, II in the lower wall portions of the hells 2!], 2! will register with the entrance and exit pipes respectively,

The operation of the device may now be readily understood. During the sweeping operation dust is drawn in through the pipe section 2, entering through aperture II, and striking the dia phragm 9 is whirled in a counter-clockwise direction on the hither side of the diaphragm, the heavier particles of dust continuing to whirl around the annular area and being visible to the eye. The stream of air helixes through the screen and exits at the opposite side. Should dust which is too large, or in particles, or lint, gather on the screen, the globular element may be grasped by the hand, pulled out from between the retention springs l and 8, and turned about 180 degrees to present the reverse side, and reinserted in its place. The stream then passing through the screen in the opposite direction clears it of its obstruction while the moving air continues in the same direction through the pipes.

It is obvious that articles of value may he arrested in this way instead of being carried into the dust receptacle of the sweeping system, and

the articles may be dumped out of the globular element through th port I l which may receive the same on either side depending on which side is placed to receive, toward pipe 2.

In case a diaphragm is preferred in which there is simply a round opening instead of a screen, a separate element may be assembled and used in the coupling part winch need not be changed for that purpose.

The plane of the diaphragm 9 should be oblique to the plane oi" the entering and exit pipes which are about 120 degrees with each other.

The invention has been set forth in detail for the purpose of illustration but it will be obvious that numerous variations and modifications may be resorted to without departing from the spirit of the invention.

What I claim is:

1. In a suction cleaning system, a dust indicator comprising a coupling element having ontrance and exit pipes at diagonally opposite sides of a central receiving trough; and a transparent globular dust indicating member shaped to conform to said trough and releasably and yieldingly supported therein, said transparent member having a pair of apertures communicating with the inlet and outlet pipes respectively of said coupling element.

2. A dust indicator as set forth in claim 1, wherein the dust indicating member is composed of two dish shaped halves, with an apertured disc included between them.

3. A suction cleaning system as set forth in claim 1 wherein the coupling element is provided with detent devices adapted to engage the periphery of the dust indicating member for yield ingly holding the same in position.

4. A suction cleaning system as set forth in claim 1 wherein the dust indicating member is an oblate spheroid shaped transparent element having a boundary rib around its greatest circumference adapted to fit into a bottom groove formed in the trough of said coupling.

5, A dust indicator for suction pipes comprising a. coupling element having entrance and exit pipes at diagonally opposite sides of a central receiving trough, an oblate spheroid shaped transparent dust indicating element having a boundary rih around its greatest circumference adapted to fit into a bottom groove of the trough of the coupling element and having in its transparent sides apertures adapted to register respectively with the entrance and ex t pipes aforesaid, said transa parent dust indicating element being adapted to be lifted out and replaced within the coupling element and to be retained therein by holding devices engaging with the periphery thereoi.

6 A dust indicator for a suction cleaning sys tem comprising a coupling element including a trough portion and angularly disposed inlet and exit pipes connected to opposite sides of the trough; and a transparent globular element hav ing a peripheral portion shaped to fit within the trough and having a central diaphragm member, said transparent element having separate apertures on opposite sides of said diaphragm adapted to communicate with the inlet and the outlet pipe respectively of said coupling element, and coacting means carried by the coupling element and said transparent element respectively for positioning the transparent element within the trough with said aperture in registry with said inlet and outlet pipes.

7. A dust indicator for suction pipes comprising a coupling element having inlet and outlet pipes at diagonally opposite sides of a central receiving trough. a transparent dust indicating globular element having a peripheral portion shaped t fit within said trough, and having spaced apor tures adapted to register respectively with said inlet and outlet pipes, said transparent dust in dicating element being adapted to be lifted out and replaced within the coupling element, and to be retained therein with the said apertures in registry with the inlet and outlet pipes by coacting means carried by said coupling element and transparent element respectively.

8. A dust indicator for suction pipes comprising a coupling element including a central receiving trough having inlet and outlet pipes extending diagonally from opposite sides thereof, and a transparent dust indicating member adapted to be seated in said trough, said member being in the form of an oblate spheroid having a central apertured diaphragm, and having in its transparent sides a pair of apertures adapted to register with inlet and outlet pipes respectively when the dust indicator member is positioned within the trough.

DANIEL BENSON REPLOGLE. 

